{"id":"CVE-2026-110050","kind":"vulnerability","aliases":["CVE-2026-110050"],"related":[],"title":"Microsoft Word: heap buffer overflow lets a remote attacker run code","description":"Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","summary":"A heap-based buffer overflow in Microsoft Office Word lets an unauthorized attacker over the network trigger memory corruption. The sources state the attacker can execute code.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other","windows","word"],"not_affected_if":[],"how_to_check":"- Open Word and check the version under File > Account (or Word > About Word on Mac) against Microsoft's update notes","fix":null,"status":"open","published_at":"2026-11-10T19:18:22+00:00","first_seen_at":"2026-11-10T19:24:26+00:00","triaged_at":"2026-11-10T19:32:33+00:00","updated_at":"2026-11-10T19:32:33+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:32:33Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: heap buffer overflow lets a remote attacker run code","impact":"high","summary":"A heap-based buffer overflow in Microsoft Office Word lets an unauthorized attacker over the network trigger memory corruption. The sources state the attacker can execute code.","audience":"businesses","category":"other","nicknames":[],"who_cares":["microsoft-office","word","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker runs code on the victim's machine over the network","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-110050 for affected builds, the patch, and whether opening a document is required.","how_to_check":"- Open Word and check the version under File > Account (or Word > About Word on Mac) against Microsoft's update notes\n- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations running Microsoft Office Word on Windows or Mac. The sources do not say which versions are affected or whether a user must open a crafted file. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000669,"input_tokens":4494,"output_tokens":439,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-110050 for affected builds, the patch, and whether opening a document is required.","search":"'-110050':14A,17A '-2026':13A,16A 'allow':61C 'attack':9A,37B,48B,64C 'base':27B,54C 'buffer':4A,28B,55C 'code':11A,51B,67C 'corrupt':43B 'cve':12A,15A 'execut':50B,66C 'heap':3A,26B,53C 'heap-bas':25B,52C 'let':6A,34B 'memori':42B 'microsoft':1A,19B,31B,58C 'microsoft-offic':18B 'network':40B,70C 'offic':20B,32B,59C 'overflow':5A,29B,56C 'remot':8A 'run':10A 'sourc':45B 'state':46B 'trigger':41B 'unauthor':36B,63C 'window':22B 'word':2A,23B,33B,60C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft Office Word on Windows or Mac. The sources do not say which versions are affected or whether a user must open a crafted file. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","microsoftoffice","other","windows","word"],"campaign_type":null,"search_a":"'-110050':14A,17A '-2026':13A,16A 'attack':9A 'buffer':4A 'code':11A 'cve':12A,15A 'heap':3A 'let':6A 'microsoft':1A 'overflow':5A 'remot':8A 'run':10A 'word':2A","search_b":"'attack':37B,48B 'base':27B 'buffer':28B 'code':51B 'corrupt':43B 'execut':50B 'heap':26B 'heap-bas':25B 'let':34B 'memori':42B 'microsoft':19B,31B 'microsoft-offic':18B 'network':40B 'offic':20B,32B 'overflow':29B 'sourc':45B 'state':46B 'trigger':41B 'unauthor':36B 'window':22B 'word':23B,33B","search_c":"'allow':61C 'attack':64C 'base':54C 'buffer':55C 'code':67C 'execut':66C 'heap':53C 'heap-bas':52C 'microsoft':58C 'network':70C 'offic':59C 'overflow':56C 'unauthor':63C 'word':60C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:22+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-110050","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110050","severity":null,"published_at":"2026-11-10T19:18:22+00:00","modified_at":"2026-11-10T19:18:22+00:00","first_seen_at":"2026-11-10T19:24:26+00:00","fetched_at":"2026-11-10T19:24:26+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}